Senior Software Developer (Contract) Duration: Up until 31 March 2027 (Possibility for extension)Location: London/Hybrid (3 days per week on site) Rate: A highly competitive salary is available for suitable candidates Role ProfileThis role focus on the development and support of systems responsible for back-office integration and Repo trading workflows.The positions require strong technical skills, familiarity with trade lifecycle processes, and the ability to work across front to back teams to ensure accurate and timely data flows. Key Responsibilities:Develop and maintain applications that integrate Fixed Income and Repo trades with downstream back office, settlement, and risk systems.Support and enhance the Repo trading application, including trading workflow tools, reconciliations, and connectivity with internal and external platforms.Build and optimize C# services that ensure robust trade capture, enrichment, validation, and distribution.Collaborate with operations, trading desks, and technology teams to resolve workflow issues and identify functional improvements.Troubleshoot production issues, perform root cause analysis, and implement long term system enhancements.Participate in architectural discussions and contribute to decisions around system design, data models, and integration patterns. Skills and Experience:Strong C#/.NET development experience in Windows environments.Understanding of Repo markets and Fixed Income trade lifecycle processes.Experience with syst